Gnd +5v CVideo MLum0 Mlum3 Blank OscDis ExtMen Gnd --1-- --2-- --3-- --4-- --5-- --6-- --7-- ---8-- --9-- -18-- -17-- -16-- -15-- -14-- -13-- -12-- --11-- -10-- Gnd Audio Rdy MCol MLum2 MLum1 Msync Clk2 ExtOsc
 (at the Atari)
 (at the Atari)
UNKNOWN CONNECTOR at the Atari.
| Pin | Name | Description | 
|---|---|---|
| 1 | GND | Ground | 
| 2 | +5V | +5 VDC | 
| 3 | CVIDEO | Input to RF modulator (Video+Audio) | 
| 4 | MLUM0 | Maria Luminance Bit 0 | 
| 5 | MLUM3 | Maria Luminance Bit 3 | 
| 6 | BLANK | Blanking output | 
| 7 | OSCDIS | Disable 14.31818 MHz Master Clock | 
| 8 | EXTMEN | External Maria Enable Input | 
| 9 | GND | Ground | 
| 10 | EXTOSC | External clock to replace Master Clock | 
| 11 | CLK2 | Phase 2 Clock from the 6502 | 
| 12 | MSYNC | Maria Composite Sync | 
| 13 | MLUM1 | Maria Luminance Bit 1 | 
| 14 | MLUM2 | Maria Luminance Bit 2 | 
| 15 | MCOL | Maria Color Phase Angle | 
| 16 | RDY | Input to the 6502 | 
| 17 | AUDIO | Audio | 
| 18 | GND | Ground | 
| Contributor: | Joakim Ögren | 
| Source: | Classic Atari 2600/5200/7800 Game Systems FAQ - Pinout by Harry Dodgson | 
  Copyright © The Hardware Book Team 1996-2004.
  May be copied and redistributed, partially or in whole, as appropriate.
  Document last modified: 2002-01-10